<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }
        li {
            list-style: none;
        }
        .box {
            width: 1200px;
            height: 460px;
            background-color: paleturquoise;
        }
        .left {
            width: 230px;
            height: 460px;
            background-color: palevioletred;
            float: left;
        }
        .right {
            width: 970px;
            height: 460px;
            background-color: orange;
            float: left;
        }
        .box2 {
            width: 500px;
            height: 100px;
            background-color: palegoldenrod;
        }
        .box2 ul li {
            width: 100px;
            height: 100px;
            background-color: palegreen;
            /* line-height: 100px; */
            float: left;
            margin-right: 33.3px;
        }
        .box2 ul .lastli {
            margin-right: 0;
        }
        .box3 {
            width: 700px;
            height: 300px;
            background-color: paleturquoise;
            margin: 20px auto;
        }
        .box3 .left {
            width: 100px;
            height: 300px;
            background-color: palevioletred;
        }
        .box3 .right {
            width: 600px;
            height: 300px;
            background-color: peachpuff;
        }
        .box3 .right ul>li {
            width: 140px;
            height: 140px;
            background-color: royalblue;
            float: left;
            margin-left: 10px;
            margin-bottom: 10px;
        }
    </style>
</head>
<body>
    <!-- <div class="box">
        <div class="left"></div>
        <div class="right"></div>
    </div> -->
    <div class="box2">
        <ul>
            <li></li>
            <li></li>
            <li></li>
            <li class="lastli"></li>
        </ul>
    </div>
    <div class="box3">
        <div class="left"></div>
        <div class="right">
            <ul>
                <li>上</li>
                <li>上</li>
                <li>上</li>
                <li>上</li>

                <li>下</li>
                <li>下</li>
                <li>下</li>
                <li>下</li>
            </ul>
        </div>
    </div>
</body>
</html>